|Publication number||US7216116 B1|
|Application number||US 09/865,163|
|Publication date||May 8, 2007|
|Filing date||May 23, 2001|
|Priority date||May 6, 1996|
|Publication number||09865163, 865163, US 7216116 B1, US 7216116B1, US-B1-7216116, US7216116 B1, US7216116B1|
|Inventors||Martin B. Nilsson, Anders S. Fasth, Christopher Ahlberg, Staffan Truvé, Erik Wistrand|
|Original Assignee||Spotfire Ab|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (42), Non-Patent Citations (13), Referenced by (127), Classifications (12), Legal Events (7)|
|External Links: USPTO, USPTO Assignment, Espacenet|
This application is a continuation-in-part of U.S. patent application Ser. No. 09/479,194, filed Jan. 7, 2000, now abandoned, which is a continuation-in-part of U.S. patent application Ser. No. 08/850,828, filed May 2, 1997, now U.S. Pat. No. 6,014,661, which claims priority from U.S. provisional application Ser. No. 60/019,049 filed on May 6, 1996.
This invention relates to a method and system for retrieving data, for example from a data base, and for allowing a user to selectively view the data based on interactive queries. This invention also relates to a control mechanism in a graphical user interface, in particular, to a method for specifying values in displayed icons.
At present, when a user wishes to analyze the data in a data base, he faces the tedious task of entering a series of search parameters via a screen of input parameters. At times, the various queries must be linked using Boolean operators, and changing one parameter or operator may often necessitate changing many other less crucial parameters so as to keep them within the logical range of the input data set. Similar difficulties are now also arising when a user or a search engine scans many Internet sites to match certain criteria.
Furthermore, the concept of “analyzing” the data in a data base usually entails determining and examining the strength of relationships between one or more independent data characteristics and the remaining characteristics. This, in turn, leads to an additional difficulty—one must decide what is meant by the “strength” of a relationship how to go about measuring this strength. Often, however, the user does not or cannot know in advance what the best measure is.
One common measure of relational strength is statistical correlation as determined using linear regression techniques. This relieves the user of the responsibility for deciding on a measure, but it also restricts the usefulness of the analysis to data that happens to fit the assumptions inherent in the linear regression technique itself. The relational information provided by linear regression is, for example, often worse than useless for a bi-modal distribution (for example, with many data points at the “high” and “low” ends of a scale, but with few in the “middle”) since any relationship indicated will not be valid and may mislead the user.
What is needed is a system that can take an input data set, select suitable (but user-changeable), software-generated query devices, and display the data in a way that allows the user to easily see and interactively explore potential relationships within the data set. The query system should also be dynamic such that it allows a user to select a parameter or data characteristic of interest and then automatically determines the relationship of the selected parameter with the remaining parameters. Moreover, the system should automatically adjusts the display so that the data is presented logically consistently. This invention makes this possible.
The graphical user interface (GUI) has revolutionized computing. Rather than having to learn a large set of commands and key patterns, GUI users can quickly launch applications, scroll between pages, change fonts, enter data base queries, and perform many other previously tedious tasks by simply moving a mouse or similar input device in order to maneuver an on-screen cursor and “clicking” on or dragging a selector displayed on a monitor. Selectors include simple check boxes, scroll bars and buttons, icons (such as an image of a small printer to execute a “Print” command), pointers, etc.
Often, however, existing selectors can themselves be too much of a good thing. By reducing the need for the keyboard, GUI designers have also often made it more dificult, even for the most dexterous using the most sensitive mouse, trackball, touchpad, touchscreen, etc., to precisely position the selectors and enter exact values. This dificulty is of course amplified for those who are not as nimble, or who use input devices such as small touchpads on portable computers that are less precise to begin with. For example, the most commonly used word-processing applications display a graphically movable button on a scrollbar as a way for the user to select which page (or portion of a page) of a document is displayed. If the user is currently viewing, say, page 3, and wants to see page 6 instead, then he positions the cursor on the button and drags it downward until page 6 is displayed.
The problem is that if the document is large, then a slight movement of the mouse, and thus cursor, can cause a large jump in which page is displayed. The conventional solution to this is for the user to enter the desired page number in a field in a window that he must open by clicking through one or more layers of a toolbar or pull down menu. When using Microsof@ Word 97, for example, selecting a specific page to scroll to in this way requires the user to re-position the cursor four separate times (to the “Edit” menu, to the “Go To” menu item, to the “Enter page number” field, and to the “Go To” button icon), with three clicks and one keyboard entry of the desired page number.
The process can be shortened by using the “hot key” combination “Ctrl+G,” but even this involves (for most users), releasing the mouse to reach the “G” key with the right hand while holding down the “Ctrl” key with the left, then once again reaching for the mouse to position (and click) the cursor in the “Enter page number” field, entering the desired page number, then moving the cursor to the “Go To” button and clicking once again. Even this “shortcut” therefore requires one simultaneous, double keyboard entry (Ctrl+G), one keyboard data entry (the page number), and two repositionings of the cursor.
The need to make it easier for users to adjust graphical range and value selectors arises in may other applications than word-processing; indeed, some other applications may be even more demanding. For example, there are many applications that visualize relationships between different data sets and allow users to manipulate the display of database analyses. In these applications, display devices—sometimes referred to as “graphical query devices”—translate cursor movements into search queries, for example, expressed in the common SQL language.
Thus, rather than having to enter the value “123.4” as a range limit into some portion of a command line, the user can simply maneuver his mouse and thus a screen cursor to drag a displayed range slider device until the edge of the slider aligns with the desired value, which is indicated on a scale or in a call-out displayed next to the slider. In these applications, there will typically be an even larger range of more finely subdivided possible values than there are pages in a typical document, which means that it is even more difficult—and therefore also slower—for a user to position the cursor and drag the displayed input device just right.
A similar operation is required to adjust other parameters using graphical input devices. For example, many applications, including data visualization programs and image editing applications, have a graphical device that allows the user to change a zoom level of a display.
What is needed is a way for users to be able to enter desired values in the context of a graphical user interface that requires fewer steps and less hand motion, that relies less on the precision of the mechanical input device than do existing GUI's, and that is more accurate. At the same time, users should not be required to adjust to using an unfamiliar graphical input device; rather, preferably, the full, familiar functionality of the input mechanism should still be available to the user. This invention provides such an input mechanism.
The invention provides a system and method for processing and visualizing data from a data base, in which the data base contains a plurality of records, each record includes a plurality of data fields, and each field has field data, a field name, and one of a plurality of data types. First, the main processing system according to the invention accesses the data base and reads in the records. For large data bases, in order to reduce processing time, the system may alternatively sample the records before proceeding with general evaluation.
In a preferred embodiment of the invention, one or more relevance measures are then selected and the system automatically detects a relational structure between the fields by calculating the relevance measure for each of the fields. Selected ones of the fields are then displayed in an order determined as a predetermined function of their respective relevance measures. The user may choose a different relevance measure from among the selected ones as the basis for the display. The system then selects a display format (for example, X-Y plot, pie chart, etc.) and displays at least one of the fields' data for the user. In the preferred embodiment, the relationship between at least two of the fields is displayed, with one field forming a base or primary field and the other field(s) forming secondary field(s). The user may also change the display format, scaling, and selection of displayed fields.
In a preferred embodiment of the invention, the system automatically detects the data type of each field, as well as a data range for each field, by evaluating the corresponding field data over a plurality of the data records. For each field, the system then automatically selects one of a predetermined set of display query devices as a predetermined function of the corresponding data type and data range. The system then displays to the user the corresponding display query devices for each field, with displayed range markings corresponding to the data range of the field. The displayed query device is preferably user-adjustable over the displayed range markings, with the display being adjusted according to the current range settings of each field's query device.
The invention provides a method and system for inputting at least one parameter into a computer. For at least one input parameter, for example, a query parameter in a database analysis routine, at least one associated primary graphical input device is displayed on a display. The system senses user selection of the primary graphical input device, which has a state that corresponds to a value of the respective input parameter and is graphically controllable by a user via at least one predetermined primary input action.
Associated with the primary graphical input device is at least one predetermined non-graphical, secondary input action that corresponds to secondary input by the user of the value of the respective input parameter. While the primary graphical input device is selected, the system senses any of the primary as well as any of the secondary input actions of the user; interprets the sensed input action of the user as input data; and sets the value of the input parameter to correspond to the input data.
In the preferred embodiment of the invention, a secondary graphical input device is generated on the display upon sensing user initiation of any secondary input action. Data entered by the user as the secondary input action is displayed within the secondary graphical input device.
Where a plurality of parameters to be adjusted, the values of the plurality of parameters are preferably associated with positions of a corresponding plurality of adjustable displayed portions of a single primary graphical input device. A respective activation region of the primary graphical input device is then preferably associated with each displayed portion. When the user selects one of the activation regions, and upon user initiation of a secondary input action, the system sets the value of the parameter associated with the selected activation region equal to data entered by the user.
A single activation region of the primary graphical input device may also be associated with a plurality of the parameters. When the system senses that the user has selected the activation region, it also senses entry by the user of a plurality of input values via secondary input action. The system then sets the values of the respective parameters according to the input values.
In one embodiment of the invention, a number of values input by the user into the secondary graphical input device is compared with the number of parameters associated with corresponding displayed portion of the primary graphical input device. If the number of values input is greater than the number of parameters, then an adjustable displayed portion of the primary graphical input device is subdividing into a number of displayed adjustable portions corresponding to the number of values input; if the number of values input is less than the number of parameters, then corresponding ones of the adjustable displayed portions are joined.
One example of a primary graphical input device is a page-selection scroll bar of a word-processing program. In this case, the parameter will in many implementations be a page number.
In several embodiments of the invention, the input data and input parameter are alphanumeric strings.
One example of how primary user input actions are performed is by maneuvering a cursor-control device such as a mouse or trackball. Secondary user input actions may then be performed using an alphanumeric input device such as a keyboard. The user may then select the primary graphical input device by maneuvering a non-alphanumeric, cursor-control device to position an on-screen cursor on the primary graphical input device; the user then performs the primary input actions using the non-alphanumeric, cursor-control device and the secondary input actions using an alphanumeric input device.
The invention is well suited for interactive visualization and analysis of data from any type of data base. Just a few of the thousands of possible uses of the invention are the visualization and analysis of financial data, marketing data, demographic data, experimental data, environmental data, logistics data, World-Wide Web log files, manufacturing data, biostatistics, geographic data, and telephone traffic/usage data.
The main components of the system according to the invention are illustrated in
A main processing system 110 may be implemented using a microprocessor, a mini- or mainframe computer, or even a plurality of such processors operating in parallel or as a pipeline. The processing configuration may be chosen using normal design techniques based on the size of the largest data set one expects to have to process, and on the required processing times. The processing system 110 includes, among other sub-systems, a sufficiently large memory 112 to store all data used in the data classification and display procedures described below.
The data set 100 (that is, its storage device) is connected for communication with the main processing system by means of any conventional channel 114, which may be a dedicated channel, or a general-purpose channel such as telephone lines (for example, for connection through a network, including the Internet), fiber-optic or high-bandwidth metal cables, or radio or micro-wave links. The size of the data set and the desired processing speed will in general determine which channel is appropriate and fast enough. The data set need not be remote from the processing system; rather, the data set's storage device 100 may even be a peripheral memory device connected directly to the processing system 110.
In most applications of the invention, the user will wish to see a graphical display of some feature of the data set. This is not, however, necessary—the invention may be used as a sub-system that queries the data base 100 and organizes the data for a supervisory routine, which then processes the data automatically in some other way. For example, the invention may be used in a system that automatically generates lists of potential customers of a product chosen from a large data base of consumer information. In the typical case, however, the results of the data processing using the invention are to be interactively displayed and to that end, a display unit 120 is preferably connected to the main processing system 110. The display unit may be a standard device such as a computer monitor or other CRT, LCD, plasma or other display screen. Standard display drivers (not shown) are included in the display unit 120 and are connected to the processing system 110 in any conventional manner.
A conventional input system 130 is also connected to the main processing system in the normal case in which the user is to select initial data classification parameters. The input system may consist of a single standard positional input device such as a mouse or a trackball, or an alphanumeric input device such as a keyboard, but will normally include both types of devices. The display unit 120 itself may also form part of the input device 130 by providing it with standard touch-screen technology. The connection and interface circuitry between the input system 130 and display unit 120 on the one hand and the processing system 110 on the other hand may be implemented using standard components and is therefore not described further here.
The main procedural steps carried out by the invention are as follows:
1) The main processing system 110 accesses the data base 100 in any known manner and exchanges standard protocol information. This information will normally include data indicating the size of the stored data set as well as its record and field structure.
2) The processing system then downloads records and classifies them by type (also known as attribute). Some examples of the many different possible types of data include integers, floating-point numbers, alphanumeric characters, and special characters or codes, lists and strings, Boolean codes, times and dates, and so on. In a data base of films, for example, each record may have data concerning the title and the director's name (alphanumeric attribute), the release year (an integer), whether the film is a comedy, drama, documentary, action film, science fiction, etc. (marked in the data base as an integer or alphanumeric code), whether the film won an Academy Award (logical) or how many it won (integer). As is described in greater detail below, the system according to the invention preferably automatically type-classifies the various fields in the data base records. In certain cases, however, the data base itself (in the initial protocol and structural information) may also indicate the types of the various fields of the records; in such case, the processing system may not need to type-classify the fields and can omit this step.
3) For each record set that the processor has classified, it then (or simultaneously) determines the range of the data for each field in the set. This can be done in any of several standard ways, and different methods may be used for different data types. For numerical data sets, the system may simply search through the set to determine the maximum and minimum values as well as (if needed), the average or median values to aid in later centering and scaling of a corresponding displayed query device. The system preferably also counts the number of different values in each set of fields in all of the records in the data set. Ranges may also be predetermined; for example, if the user wishes to include in the data base search data records sorted alphabetically by surnames of Americans or Britons, then the range of first letters will be no greater than A–Z (a range count of 26), although a search of the actual records in the data base might show that the range of, say, A–W is sufficient (with a range count of 23). For names (or other text) in other languages, the alphabetical range and range count may be either greater or smaller; for example, Swedish text could begin on any of 29 different letters (A–Z, .ANG.,A,O).
4) The system then analyzes the relational structure of the data records using any or all of a plurality of methods. These methods include regression, decision trees, neural networks, fuzzy logic, and so on. According to the invention, the system preferably applies more than one method to determine the structure of the data and then either selects the “best” method in some predetermined sense, or else it presents the results of the different structural determinations to the user, who then may then select one that appears to give the best result.
5) Once the system has determined the data field types and ranges, the system determines a user interface to be displayed on the display unit 120. The results of the structural relational analysis are also preferably used to order the various query devices that are displayed to the user to give him guidance in finding the strongest relationships among the various fields of the data base. The interface preferably automatically selects (at least initially—later, the system automatically presents alternatives to the user, from which he may select) the lay-out of query devices (described below), coordinate axes (either automatically or under user control) and scales, display colors and shapes, the degree of “zoom” of the display (if needed), or other features depending on the particular application and user preferences.
6) In many cases, there will be so many records in the data base that it would take too long for the system to search through all records in the data base to determine the record type or range. The invention therefore preferably includes the procedural step of sampling the data set to determine the record type and to extrapolate its range from the range of the sample. Different sampling techniques may be used. For example, every n'th record can be examined (where n is determined by what percentage of the records the system can examine in a given time); or a predetermined percentage of the records can be selected randomly; or records may be sampled randomly until a predetermined statistical significance has been achieved, etc. Once the sampling process has been completed, the entire data set can be downloaded and processed for display using the type and range classifications of the sample.
In most conventional systems, data base searches are interactive only in the sense that the user's initial “guess” (search profile) can be modified and re-submitted—the user is given little or no guidance or indication of the size and range of the data involved in the various possible choices for the search profile. As such, the user might, for example, initially submit a search profile with no possible “matches.” By initially analyzing the data set to determine data types (attributes) and ranges, the invention is able to create an initial query environment that allows the user to avoid such wastes of time. Even further time-saving procedures unique to the invention are described below.
The “scale” of the alphaslider need not be alphabetical; rather, instead of the letters “A”, “B”, . . . , “W” and so on, the system could display numbers, one of which the user is to select by “touching” and moving the slider 230. The user may move the slider 230, for example, by placing the tip of the cursor 220 on it and holding down a standard mouse button while moving the mouse to the left or right, releasing the button when the slider is at the desired value.
The illustrated range slider query device 210 has a scale the same as the single-valued slider, but, as its name indicates, is used to select a range of values. To do so, the user “touches” either the left range slider 240 or the right range slider 242 and moves it as with the slider 230. In the illustrated example, the user has selected a query such that only those relations should be displayed for which the chosen attribute has a value between about 13 and about 72. Excluded values are here displayed “shaded” on the slider query device.
Many variations of the illustrated sliders may be used in the invention, such as those that indicate which values are not to be included (for example, by “clicking” on an appropriate portion of the slider display to indicate by shading that the logical complement of that portion of the range is to be applied), that indicate ranges inclusive at one extreme but exclusive at the other (for example, by clicking on the range marker to toggle it to different logical states), and so on. A more complete discussion of the possibilities is given in the inventors' papers “Exploring Terra Incognita in the Design Space of Query Devices,” C. Ahlberg & S Truve, Dept. of Computer Science and SSKKII, Chalmers University of Technology, Goteborg, Sweden, which is attached as appendix A; the article “The Alphaslider: A Compact and Rapid Selector,” C. Ahlberg & B. Schneiderman, Proceedings, ACM SIGCHI '94, Apr. 24–8, 1994, which is attached as appendix B; and “Dynamic Queries for Information Exploration: An Implementation and Evaluation,” ACM SIGCHI '92, May 3–7, 1992, which is attached as appendix C.
The illustrated example also shows a toggle 250 on which the user has “clicked” (for example, in the standard way, by “touching” the toggle with the cursor on the display screen and pressing a mouse button) to indicate that the feature “Y” should be present in the displayed data. That the toggle is “on” may, for example, be indicated by the processing system by displaying it darker, by superimposing a cross (“X”) on it, or in some other conventional way.
A checkbox 260 contains more than one toggle. In the illustrated example, features B and C have been selected for inclusion as a data query, whereas A and B have not. A displayed dial 270 is yet another example of a query device. Using the cursor, the user pulls the pointer 272 clockwise or counter-clockwise and the system displays the value (in the example, “73”) to which the pointer is currently pointing. Other query devices may be used, for example, pull-down menus and two-dimensional sliders (for example, one on an x-axis and another on a y-axis).
As is mentioned above, the invention can be used for many different types of data bases and data base structures. Merely by way of example, however, assume that the user wishes to analyze the possible relationships found between various items in a data base of customer purchases for a chain of stores that sell clothing, shoes, and cosmetics. Such data might be compiled automatically, for example, for all customers who use the store's own credit card. This situation is illustrated in
As is common, the data base 100 is organized as a series of records R1, R2 . . . , Rm, each of which has a number of fields F1, F2, . . . , Fn. In this example, there are ten fields per record (here, n=10 but the number of fields per record in actual data bases may of course be greater or less than ten—the invention is not dependent on any particular number of records or fields). The fields (F1, F2, . . . F10) in the example are: F1) an identification code for the customer associated with the record; F2), F3) and F4) the customer's name, age and sex, respectively; F5) the total amount the customer has spent (during some predetermined period); F6), F7), and F8) the amount the customer has spent on clothing, shoes and food, respectively, during this period; F9) the date of the customer's most recent purchase; and F10) a number representing how frequently the customer makes purchases (for example, measured in transactions per month).
The illustrated data base also includes standard protocol data as well as field names associated with the different fields. The protocol data will typically include data indicating the total number of bytes (or words) the data base contains, how many records, how many fields per record, and how many bytes (or words) each field consists of. If the protocol is already standardized or otherwise predetermined between the data base 100 and the main processing system, then there will be no need for the protocol fields. Moreover, the field name data will not be necessary if it is already established in some other conventional manner for the user or the main processing system of the invention what data the various record fields represent.
In the preferred embodiment of the invention, the main processing system 110 automatically detects the type of data in each of the record fields, unless the data types are already specified by the data base in the protocol or field names data. This may be accomplished using any known data type detection routine, as long as the number of records in the data base is large enough to allow the detection routine to make statistically relevant deductions about the data. For example, in order to detect the type of data in field Fk (k=1, 2, . . . m), the processing system may access (that is, download in bulk, read in and process sequentially, etc.) all of the field data (R1, Fk), (R2, Fk), . . . , (Rm, Fk), where (Rj, Fk) indicates the k'th field of the j'th record. Any of many different known tests may then be applied to determine the data type.
For example, if all (or more than a pre-defined percentage) of the bytes of all of the fields Fi (that is, field Fi in all of the records) correspond to binary numbers from 97–122 and 65–90, then the system may assume the field contains data with an alphabetical (string) attribute (type), since these are the ranges of the ASCII codes for the English-language alphabet (upper and lower case, respectively). In the example shown in
For each field, the range detection sub-system 142 determines upper and lower limits. For numerical fields, for example, this will typically be the maximum and minimum values. For string data, however, this will typically be the letters closest to either end of the alphabet. The number of different values is preferably also accumulated for each field. Additional data may also be tabulated as desired or needed. For string data, for example, for each string field, the system might accumulate a separate table of the number of times each letter of the alphabet occurs first in the field in order to reduce clutter in the later display by eliminating non-occurring letters. The median of the occurrence table may then be calculated and used for later centering of the scale of the associated query device (see below). For numerical fields, the range detector 142 may additionally calculate such statistical range data as the mean, median, and standard deviation of the field data. All calculated range data is then preferably stored in a data range table 342 in the memory 112. In
As is mentioned above, the type- and range-detection sub-systems 140, 142 may operate either in series or in parallel. Even with a single processor implementing both sub-systems, these two sub-systems may operate “simultaneously” in the sense that each operates on a single data value before the next is processed, in order to reduce processing time by having only a single download of the data. For example, the range detector 142 may use each accessed data word as soon as the type detector is finished with it and then use it in the on-going, cumulative calculations of minima, maxima, means, and all other range data for the corresponding field. Once the type detector determines the data type for each field, the range detector can then discard range data calculations that are inappropriate to the detected type. For example, in general there will be no need for a calculation of the median or mean of Boolean or entire strings of data (although, as is mentioned above, there may be for first letters).
Once the type and range of the fields have been determined, the system then automatically determines various relationships between the different data fields. Preferably, several different methods are used, from which the system initially selects a “best” method in a predetermined sense, and also orders query devices in such a way on the display that they indicate to the user which relationships are the strongest. In some applications, the user knows which data characteristic (data field) the relationship determination is to be based on. For example, the user might wonder which type of purchase (clothing, shoes, or cosmetics) seems to be most highly dependent on the age of the customers. In such cases, the user will indicate this to the processing system by entering the independent variable—in the assumed example, “age”—via the input system 130. (The processing system may, for example, display a list of the field names on the display, from which the user can select in any standard way.) The preferred embodiment of the invention is not restricted, however, to beforehand knowledge of which data field is to be the independent variable in order to determine the structure of the data set, although this will in general reduce processing time and memory requirements.
One method of determining the structure of the data set is statistical correlation, either directly, using standard formulas, or in conjunction with determining the regression (especially linear) parameters for any two selected fields of data. For each possible pair of different data fields, the system calculates the statistical correlation and stores the resulting correlation values in a correlation matrix in the memory. The system then identifies the maximum correlation value for each field taken in turn as the independent variable, and orders the remaining variables in order of decreasing correlation. Note that statistical correlation will in general be a meaningful measure only of the relationship between sets of quantitatively ordered data such as numerical field data.
Moreover, if the user indicates which of the m variables (that is, which of the m fields) is to be used as the independent variable before the system begins correlation calculations, then the system need only calculate and order the resulting (m−1) correlation values. If the user does not indicate the independent variable for this or any other structure-determining method, then the system may simply assume each variable to be independent in turn and then calculate correlations with all others; the greatest correlation found can then be presented initially to the user.
Another method for determining structure is the decision tree, which can be constructed using known methods. See, for example, Data warehousing: strategies, technologies and techniques, Ron Mattison, McGraw Hill, 1996. As an example, consider
Given the illustrated tree's ordering of branches, one can see that the highest level of average total spending is for 36–55 year-old women who purchase 6–10 times per period ($2630). By summing “upward” all branches at each level, the system can determine the total average purchases of all men/women whose frequency is 6–10, then for all men/women and then by traversing the tree “downward” the system can pick the path (order of variables) that gives the greatest total average spending, the next greatest, and so on. Note that the decision tree structure is not limited to numerically ordered fields.
In another, straightforward structural description of the data base the system compiles and inspects the distribution of distinct values (or number of values in a plurality of distinct intervals). This may be done either independently or in conjunction with the construction of, for example, a decision tree.
Yet another way to determine the structure of the data base is by using a neural network. The theory and construction of neural networks is well documented and understood and is therefore not discussed in detail here. Of note, however, is that neural networks must in general be “trained” to stabilize on known data sets before they can be used on “actual” data sets. In the context of this invention, the use of a neural network will thus normally depend on some beforehand knowledge of at least the type of data in the data base, so that a suitable set of training data can be compiled and used to train the network. Here, “suitable” means of the same general type, distribution, and with the same general data relationships as those actually presented to the processing system in later use. In many cases this will not be possible; in others, however, it often is, for example, where the data base is numerical and dependent on an underlying set of substantially constant rules or natural laws such as meteorological data.
Assuming some other method is first applied to determine membership functions for the different variables (data fields), fuzzy logic techniques may also be used to measure the strength of relationships among pairs or groups of variables.
Other structure-determining methods include predictive rule-based techniques, which are described, along with still other methods, in Data warehousing: strategies, technologies and techniques, Ron Mattison, McGraw Hill, 1996.
Each different method for determining the structure of the data corresponds to a particular measure of what is meant by the “closeness” or “strength” of the relationship between two or more data fields. In many cases, only one of the different structure-determining methods in the sub-system 144 will be suitable for the detected data types. For example, statistical correlation may be the most suitable method if all of the data fields correspond to numerical data, whereas decision trees will normally be more efficient for ordering fields of strings or Boolean data. “Suitable” and “efficient” may be defined and calculated in any predetermined, known sense to determine a validity value indicating the validity of the corresponding measure. Furthermore, in many cases the methods themselves will reveal their own unsuitability. For example, if almost all data field pairs have statistical correlation near zero, then a different method, such as a decision tree, is almost certainly indicated.
Common to all the structure-determining techniques applied by the structure sub-system is that the sub-system determines a measure of relevance for each data field. In some cases, the relevance measure for a given field may be wholly independent of other fields. For example, one straightforward measure of relevance might be a count of how many fields have a certain value, or how many distinct values the field holds. This might be very relevant, for example, in evaluating the sales of some particular product, regardless of other sales.
In other cases, the measure of relevance may be a measure of dependence of some set of dependent, secondary variables (fields) on some base, independent variable (field) selected either automatically or by user input. One method for automatic selection would be to use as the independent field the same field ultimately selected by the user during a previous evaluation of the same or a similar data base or through user input. Another automatic method would be for the system to be connected to an existing expert system, which then selects the independent field. Yet another automatic method would be for the system to determine all possible pairs (or some predetermined or heuristically determined number of pairs) of fields, then evaluate the relevance measure for each pair, and then order all the results for user evaluation and selection. Statistical correlation (alone, or in conjunction with a linear regression or other curve-fitting routine) is one example of a measure of relevance that is based on a measure of dependence.
Once the system has calculated the relevance measure for each of the fields, then it preferably presents the results to the user by displaying the corresponding field names (or some other identifier) in order (for example, decreasing) of their relevance measures. Where the relevance measure involves dependence of secondary fields on a chosen base field, then the system preferably displays an indication of which field is the base field and in what order the other fields depend on it. The dependent variables are, for example, ordered in terms of decreasing dependence so that the user is given guidance as to which relationships may be of greatest interest. (As is described below, the user can change the order of presentation and the plotted, relationship-visualizing display.)
At any time after the system has determined the type and ranges of the various data fields, the system proceeds with query device selection. Consider once again
More detailed discussion of query device selection is disclosed in the inventors' article (also mentioned above) “Exploring Terra Incognita in the Design Space of Query Devices,” C. Ahlberg & S Truve, Dept. of Computer Science and SSKKII, Chalmers University of Technology, Goteborg, Sweden, which is attached as appendix A, which also discusses the scaling of sliders as a function of their range. For example, the lower limit of the data values may be placed at the left end of the slider scale, the upper limit at the right end, the different gradations or value marks (AB . . . CD . . . E . . . K . . . L . . . MNPR . . . S . . . W) can be displayed adjacent to the slider, and centered on the previously calculated median or average value.
The chosen query devices for the different data field variables are then preferably displayed on the display in the order of dependence on the chosen independent variable. The ordering used is, preferably, at least initially, as determined by the structure-detecting method that calculated the most significant dependence relationship in any pre-defined sense, that is, has the greatest validity value. For example, an indication of the name of the independent variable (that is, its field name) may be displayed in some prominent position on the display screen, and the other query devices are then preferably positioned top-to-bottom, left-to-right, or in some other intuitive way so as to indicate decreasing measured dependence on the independent variable.
Once the query devices are sorted and displayed, the system preferably also displays an initial plot (for example, X-Y, pie chart, bar graph, etc.) of the relationship. The initial type of plot, its scaling, color scheme, marker type, size, and other features—in short, the view selection—are preferably selected in any conventional manner.
Using a pull-down menu, the user had selected “AGE” as the independent variable, and, using a different pull-down menu 506, indicated to the system that TOTAL PURCHASES should be plotted against AGE. Rangesliders 508, 510 are preferably displayed on the respective x- and y-axes to allow the user to adjust (by moving the range markers with the cursor 220) the displayed ranges. In the illustrated example, the system plot only the data for which the frequency lies in the range 2–25, the recency lies in the range 0–24, since the user has moved the range markers of the respective range sliders accordingly.
Using known techniques, the system continually senses the state of all toggles, range and alphasliders, etc. and whenever a change is detected, it re-plots the selected relationship to include only the desired data characteristics. For example, if the user were to “click” on the toggle for “Male” (“M”), so that it is de-selected, then the system would remove the “.DELTA.-marked” data points on the plot 520. As the user changes the settings of other query devices, the system updates the display accordingly to include only the field data that falls within the indicated ranges. This allows the user to view and change the data base presentation interactively, so that there is no break in concentration and exploration of the data base for time-consuming re-submission of conventional queries.
Administrative information such as data set file name, the number of records, and the date and time may also be included on the display screen as desired and as space permits.
The invention provides a way for a user to quickly and easily perform, in the context of a graphical user interface (GUI), such operations as entering values into a data-analysis or display-control application information or navigating a highly graphical display, using text commands or alphanumeric data, but still primarily through use of graphical input/display devices. Below, the main hardware and software components in a system according to the invention are described. Then, the general inventive method is outlined, after which specific examples of the many input devices according to the invention, and examples of their uses, are illustrated and discussed.
Main System Components
Various physical (as opposed to purely graphical), user-operated I/O devices are connected to respective (or shared) input ports. For example, in
Similarly, many other devices such as trackballs, touchpads, joysticks, etc., often take the place of the illustrated mouse 1132. Moreover, in some systems, such as handheld computers (including those referred to as “personal digital assistants”), the user selects a current position on a display screen by touching the screen with a stylus. In still other systems, in which the display is a touchscreen, the user can activate on-screen GUI devices simply by touching the screen. Voice-recognition software also often includes the ability to control an on-screen cursor, select icons, etc., using voice commands. Any keyboard or equivalent, or any mouse or equivalent, may be used to implement the invention—the only requirement is that the user should be able to designate some current active point or region (for example, by controlling the position of a cursor 1140 or other displayed position indicator using a mouse) on the display screen 1142 of a monitor 1144, laptop or handheld computer system, and to enter symbolic (including alphanumeric, or just alphabetical or numerical) and/or functional data. Furthermore, one can also use this invention even in systems, for example, those whose GUI is operated by a stylus and a touchscreen, that do not have a displayed cursor. The terms “keyboard,” “mouse,” and “cursor” are therefore used here as collective terms and only by way of example because these are the most common input devices and are intended to refer to their respective equivalent physical and graphical devices as well, several of which are mentioned above.
As is any other computer there is system software, in particular, an operating system 1150, which is required to support the applications, such as application 1160, that are installed to run on the computer. As in other conventional computers, the operating system 1150 includes drivers 1152 as necessary to act as an interface between the given system software and any peripheral devices. These peripheral devices will generally include the keyboard 1130, the mouse 1132, and usually the mass storage disk 1120 itself, which are connected to the hardware platform. Depending on which system hardware and software are included in any given implementation of the invention, an application program interface (API) 1154 is also included within the operating system. The nature, design and operation of drivers and API's are well known in the art of computer science and are therefore not discussed further here.
One form of interface that has particular relevance in the context of this invention is the graphical user interface (GUI) 1156, which is typically a component of the operating system, but may also include specific hardware support as needed. GUI's are also well-understood components of modern computer systems and are therefore not explained in greater detail here. The only aspects of a GUI that are relevant to an understanding of the invention are 1) the ability, together with the drivers for the various input devices and related conversion software, to relate the motion of some physical input device (such as the mouse 1132) or other user action (such as touching the display screen or entering a voice command) to the coordinate system used to generate a display on the screen 1142; 2) to thereby sense what point in the display the user has thereby selected (for example, by positioning the cursor 1140 by moving the mouse); and 3) to accept, interpret and associate with the currently selected position any input signals, such as a click of any mouse button or any keyboard entry, voice data, stylus touch, etc., made by the user.
A very common example of these GUI operations is when the user of a word-processing application moves the screen cursor over the button of a page scroll bar and, holding down a mouse button while moving the cursor downward, “drags” the button downward on the bar so as to cause the application to display some other page of the currently active document. Note that, in this case, not only is the document scrolled downward, but the position of the scroll bar button itself is continuously updated to correspond to the position of the cursor as long as the user keeps the cursor within the area of the display corresponding to the scroll bar and holds down the designated mouse button.
In order to implement these operations, the application 1160 will typically include a software module 1162 that relates the X-Y position of the cursor to whatever feature (for example, a displayed document, an icon, a “minimize” or “maximize” button, scroll bar, etc.) of the current display the tip of the cursor is over. This module 1162 thus corresponds to a GUI component within the application itself. Indeed, when running most modern software packages, the user will typically see portions of a display that are controlled by different GUI modules. For example, when running the word-processing application Microsoft Word on the Windows 2000 operating system, the user will see both a “Start” icon, which is used to communicate directly with the operating system, and various font-control icons such as “B” and “/”, which are associated with the Word application.
When an on-screen device is activated, the system accepts certain actions as valid inputs that are used to control the underlying routine. The user typically activates a graphical input device simply by placing the cursor over it (or, for example, by speaking an appropriate “Select” voice command). Each graphical input device, such as an icon, menu, scroll-bar, slider, etc., thus has associated with it one or more normal or standard actions that the user performs to input data to or otherwise use the feature the device is intended to control. Any other user action is either ignored or affects (acts as a valid inputs to) some other feature.
At least one input parameter is associated with each graphical input device. In the context of this invention, these parameters are not restricted to alphanumeric input such as numbers and letters and text strings, but may also be “functional,” for example, “clicks” of a mouse button or function keys of a keyboard. Thus, an input parameter here means any input caused by user action that conforms to the predetermined input format of the underlying software routine.
In most existing GUI's, as long as the user keeps the cursor over an icon, the only user actions that the system interprets as being related to the feature associated with that icon is the clicking of a mouse button—any other user action is either ignored or activates some feature unrelated to the icon. For example, if the user places the cursor over a “Save” icon, then the only relevant user action will be the clicking of a mouse button (corresponding to issuing a “run” command), which is the only valid input “parameter” to this graphical input device. If the user moves the cursor (or otherwise deselects) out of the field of the device, which is a non-standard action for this graphical device, then the device is inactivated in the sense that the GUI will no longer interpret user actions as intended to be inputs to the corresponding routine.
Similarly, when the user places the cursor within a scroll bar or slider, the only actions that affect the routine controlled by the graphical device are the clicking of a mouse button, or the holding down of a mouse button and a dragging motion of the mouse. If, using the prior art, the user were to enter a text string via the keyboard when the cursor is over the scroll bar, then the GUI will either ignore this non-standard action or assume it relates to some other feature such as text input to a currently displayed document.
In some other applications, if a user presses a scroll wheel of the mouse, then a special cursor is generated within the field of the scroll bar, which the user can place above or below the control button to direct the system to scroll up or down, respectively, with no need to drag a control button. Any other user action except pressing a mouse button, moving the mouse to move the special cursor up and down, or rolling the scroll wheel, that is, any non-standard action, causes the system to return to the state it was in before the wheel was first pressed.
Along with the other software modules that define the primary application itself (for example, data analysis or word-processing or calculation routines), the application 1160 according to the invention includes a secondary input module 1163. When this module 1163 is activated, an input interpretation module 1164 interprets data entry by the user according to the structure of a current primary graphical input device, and then applies the input data to a parameter adjustment module 1165, which adjusts the parameter in whatever routine it is associated with. A device display module 1166 then also changes the display of the primary graphical user input device (and/or removes the display of the secondary graphical input device) according to the user-entered data.
Still another module that is included in the preferred embodiment of the invention is a call-out generation module 1167 that generates and causes to be displayed some secondary graphical input device such as a call-out or text box, for example, using an existing “tool-tip” feature of a common GUI. For the sake of simplicity, the secondary graphical input device is referred to here simply as the “call-out,” which is to be understood as including any other graphical device that performs the same function.
The module 1167 may be launched automatically and immediately, that is, as soon as the user positions the cursor or otherwise selects a primary graphical input device designed according to the invention. In the preferred embodiment of the invention, however, the module 1167 generates the call-out only after the user selects—activates—a primary graphical input device and takes any predetermined, valid secondary action—not immediately generating the call-out reduces on-screen distraction to the user and the operation of invention becomes more transparent, less obtrusive, and retains the look and feel of the existing GUI as much as possible.
It would also be possible according to the invention not to generate any secondary graphical input device at all, but rather simply to evaluate user actions whenever the cursor is on any primary graphical input device that has a secondary graphical input device associated with it: If the user performs a primary action, then the system assumes the user action is an input according to the protocol and format of the primary device. If the action is a secondary action, then the system assumes that input to the routine normally controlled by the primary graphical device is according to the format of the secondary device. The user takes any other action—an invalid action, then the system treats it as it normally would, that is, it either ignores it, uses it as input to some other routine, or simply deactivates the primary input device altogether. These options will become clearer by considering the examples of invention below.
All of the modules 1162–1167 may be designed and implemented using known programming techniques given the description below. Moreover, it is not necessary (although it will usually be easier) to include the modules 1162–1167 within the actual primary application 1160 itself (for example, a data mining, data visualization, or word-processing program); rather, any or all of the modules 1162–1167 may be implemented within the operating system 1150, or within a separate, dedicated application, as long as it is properly functionally linked, for example via remote procedure calls, to the primary application.
As will become clearer from the description below, the novel features provided by the invention are invoked when the user selects some primary graphical input device and then takes any predetermined secondary action associated with that primary device. On the other hand, when the invention is not invoked, the input interpretation module will perform its conventional functions. For example, if the cursor 1140 is over a portion of a document, and the user types a word via the keyboard, then the interpretation module 1164 of a word-processing application will insert the corresponding input word in the appropriate place in the data file in memory comprising the document, and will cause the operating system to call the display driver to update the display (usually via the graphics card 1108) accordingly. On the other hand, if the cursor is over a “Save” icon and the user presses (“clicks”) the proper mouse button, then the application may instruct the operating system to copy the data corresponding to the document into its assigned locations in memory 1106 or on disk 1120
As will become clearer below, the invention may be used to improve the ease of use of any type of application that uses display devices for data input. One of the many types of applications that will benefit especially from the invention, because they so often make great use of various displayed devices to select values and ranges, is data visualization. U.S. Pat. No. 6,014,661 (Ahlberg, et al., “System and method for automatic analysis of data bases and for user-controlled dynamic querying,” issued 11 Jan. 2000) discloses an example of such a data visualization system.
In these applications, often very complex databases are queried. The results of the queries are then analyzed and displayed in some visual format, usually graphical, such as a bar or pie chart, scatter plot, or any of a large number of other well-known formats. Modern analysis tools then allow the user to dynamically adjust the ranges of the displayed results in order to change and see different aspects of the analysis.
Assume, for example, that a marketing analyst is interested in examining sales figures for a particular product as a function of the age of the buyers. One possible visualization of such data is illustrated in
The invention assumes the following: Some application, such as data analysis or data mining software, or a word-processing routine, etc., generates at least one, and possibly many, on-screen primary graphical input devices, which may be of any type and need not be the same. Associated with each such graphical input device is at least one standard action, which is also referred to below as a “primary input action” or simply as a “primary action.” As is explained above, a primary action is any action by the user, such as clicking a mouse button, that launches a routine normally associated with the device, that is, as it would according to the prior art. For example, with the cursor on a “zoom” icon, the only standard primary action is the pressing of a mouse button (to call up a pull-down menu or activate a slider), possibly followed by a movement of the mouse or other positioning device.
As in arrangements according to the prior art, the user (or the system itself, for example, as part of a data entry routine) selects—activates—one of the primary graphical input devices in any conventional manner, for example, by positioning a cursor over it, touching it with a stylus, by voice command, etc. This then becomes the “active” primary input device. According to the invention, as long as the user takes any primary action associated with the active device, then the system will perform as if the invention were not present. Thus, if the user drags a control button of a range slider, then its corresponding values will be adjusted accordingly, as usual.
When the system senses (in any conventional manner) that the user has selected the primary device, for example by a specified click of a mouse button, by stylus touch or voice command) it then also enables secondary user input to the primary device. Secondary input is signaled to the system by the user taking any predefined secondary input actions or, simply “secondary actions”. If the user takes any secondary action, then the system accepts these actions as secondary inputs to the routine associated with the primary device. For the sake of confirmation, and to make it easier for the user to see what he is doing, a secondary graphical input device is preferably displayed, along with the primary, whenever the user begins to perform some secondary action. If the user takes any other action besides a primary or secondary action, that is, an “invalid” action, then both the primary and secondary graphical input devices are preferably inactivated. These concepts will become clearer and more concrete by considering the examples given below. When secondary input is enabled, the user may input any symbolic or functional data using the keyboard as appropriate to the data type associated with the on-screen input device. The system then interprets the input data and acts accordingly, preferably adjusting the display of the primary input device to correspond to the input. Several specific examples will be given below in order to illustrate these general concepts.
A scroll bar, indicated generally as display field 1220, has optional end delimiters 1222, 1224. By positioning the cursor 1140 over either delimiter 1222, 1224 and holding down a mouse button, the user can direct the application to scroll the displayed document up or down. Scrolling can also be accomplished by placing the cursor over a displayed control button 1226 and dragging it up or downward, whereby the display of the button will appear to move within a range field 1228 of the scroll bar and the display of the document 1208 will be adjusted accordingly. In some applications, such as Microsoft Word, a small window (not shown) may also be displayed adjacent to the range field to show which page is indicated by the current position of the button 1226.
In Word, the display of the document is not actually updated until the user releases the mouse button. In other applications, such as Word Perfect, the display itself scrolls as the button 1226 is moved. All of these features are very well known to any user of modern computer applications and are therefore not described in greater detail here. What is important to note, however, is that the user of this prior art arrangement controls the scroll bar and the resulting display entirely by maneuvering the mouse to control the cursor to adjust the button—even if a window is displayed to show the user what the indicated page is, the user must still carefully and accurately drag the button 1226 to avoid undershooting or overshooting the desired page.
According to the invention, however, whenever the system senses that the user has selected, that is, activated, some primary graphical input device, for example by maneuvering the cursor 1140 into an activation field of the scroll bar 1220, it accepts both primary and secondary user actions as valid inputs to the scroll bar routine, that is, the software module that determines which portion of a document is to be displayed based on the position of the button 1226 on the scroll bar. In this case, and assuming by way of example that the user is using Microsoft Word 97, a primary user action would be any existing action used to control the scroll bar—a mouse click above or below the button, or a mouse click (held) on the button followed by a dragging motion with the mouse. In the prior art, any other user action (for example, entering the number “5” via the keyboard) will either be ignored by the operating system or (for example, moving the cursor off the scroll bar entirely) will cause the scroll bar to be deactivated in the sense that further user actions will not affect the state of the scroll bar.
According to the invention, however, when the user selects the primary device (here, scroll bar), the system also interprets secondary user actions as valid inputs to the underlying executable routine. In this case, a secondary action will be any keyboard (or stylus, or voice) entry that indicates a scrolling instruction but that is not a primary action. In the example illustrated in
For example, as
Note that it is not strictly necessary according to the invention ever to generate and display any secondary graphical device such as the call-out—the system can simply accept any valid secondary input and act accordingly. Some secondary graphical input device is preferably displayed, however, not only to allow the user to see what he is entering (which is especially useful where the secondary input is a text string, to avoid mis-typing), but also as a reminder that he has in fact just begun secondary input. Generation and display of the call-out 1230 is therefore assumed in the examples below.
The system then, either automatically or after user confirmation (for example, clicking a designated mouse button one or more times, or pushing the “Enter” key on the keyboard), changes the active display to be page 5 without the user having to drag the button 1226. At the same time, the system preferably updates the displayed position of the button 1226 to correspond to the “Page 5” position it would have had if the user had dragged it there.
The system may then remove the call-out 1230 from the display either immediately, or only after the user moves the cursor out of the activation region or otherwise de-selects or inactivates the primary graphical input device. In the preferred embodiment of the invention, the secondary input device 1230 is removed from the screen as soon as the user performs any action other than one of the predetermined secondary actions. In order to prevent the system from displaying the secondary input device 1230 unnecessarily, it is preferable to require the user to move the cursor out of any activation region and then back into it in order for a new call-out to be displayed and new data entry enabled.
In the preferred embodiment of the invention, the system accepts input—primary and secondary—to a primary graphical input device as long as the device is active. Thus, primary and secondary input will be enabled simultaneously. This is not necessary, however; rather, depending on the needs of a given application, the user could also be required to do something to specifically enable secondary input. For example, a user might be required to position the cursor on one or more pre-defined, dedicated activation fields associated with the primary device. This feature will be particularly useful where the primary graphical input device is designed to accept more than one input value, for example, the limits of a parameter range. In this case, the activation region(s) of the graphical input device 1220 should preferably be chosen to allow the greatest ease of use of the invention by the user; this may of course vary with the application and can be determined using normal GUI design considerations. One example of an activation region for the device 1220 could be the region of (that is the portion of the display lying within the coordinates for) the displayed button 1226 itself, and/or anywhere in the range field 1228 on either side of the button, and/or within either delimiter 1222, 1224.
It would also be possible to include in the display a special activation field, for example, with a dedicated icon 1232 that is separate from the graphical input device 1220 but functionally associated with it by the GUI. In order to make it easier to use, such a separate activation region should preferably be displayed at least near the input device with which it is associated, or near some other field or icon 1234 that is related to the parameter to be input (here, page number).
If specific user action is to be required to enable user input, then arranging the corresponding activation field as a sub-region of the graphical input device itself is preferred, especially where the primary device sets more than one parameter. First, it is more intuitive to use, since the user assumes that operations relating to a graphical input device can be done by pointing at the device. Second, it does not require any persistent change to what the application displays (for example, the call-out 1230 preferably disappears after the input operation) change. Third, in applications such as data analysis, there are often many primary graphical input devices, and all secondary graphical input devices will be immediately associated with their respective primary input devices without cluttering the display screen and causing confusion. Even in common word-processing programs, for example, there will usually be at least two scroll bars active at any given time: A vertical bar for up-down page scrolling and a horizontal bar for lef-right page scrolling. Fourth, the user will not need to decide before moving the cursor whether he will use primary or secondary input.
More than one activation region may be provided for a single primary device. Continuing with the scroll bar example, in
Note that this string searching capability of the invention is not limited to use with word-processing programs. For example, when viewing a page of Internet content using a standard browser such as Internet Explorer, the only primary actions normally allowed when the cursor is over a displayed page are to operate a scroll wheel or to move the cursor to some other device field such as a “Back” icon. By designating any part of a browser display (including anywhere in the displayed page itself) as an activation field, an alphanumeric keyboard entry could be interpreted as a valid secondary action. By typing, for example, “Spotfire,” the browser could then be instructed to find the next occurrence of this text string in the document, or to highlight all occurrences, etc. As long as the activation field(s) and valid secondary actions are made known to the user, any data could be input using the invention that would otherwise require using the existing primary graphical input devices.
Of course, a full display of the results of a data analysis would normally include some form of plot or table showing the results—the slider would be used to adjust, for example, some aspect of the display, or to submit a data base query. Only the slider is shown in
One difference between a typical slider 1320 and a typical scroll bar is that the slider will usually have either some adjacent scale 1330 or other feature to show the user what range is currently indicated. Merely by way of simple example, the scale 1330 in
The slider may also be provided with some indicator 1340 that makes it easier for the user to position the cursor 1140 for dragging one edge of the button. In this example, the user would normally, that is, according to the prior art, adjust the range of the slider from 0 to some value by dragging the indicator 1340 to the right until the right edge of the button aligns with the desired value. In
Using the invention, however, the user positions the cursor 1140 within a predetermined activation field of the slider, for example, by pointing to the button 1326, or adjacent to some other suitable and easy-to-see feature. As
The user may then enter any desired value, for example “60,” using the keyboard, which the system then preferably displays within the call-out for the sake of confirmation (see
Once the user takes whatever predetermined confirmation action is required, if any, for example, pressing the “Enter” key or a designated mouse button, then the system accepts and interprets the entry, and adjusts the corresponding parameter and the size of the button accordingly, just as if the user had adjusted the device completely. The final state of the slider in this example is shown in
The invention is not restricted to use with primary graphical input devices that provide for entry of only a single parameter.
A different activation region is then predetermined and associated with each parameter. For example, as in
In general, to reduce the need for the keyboard, there is preferably one activation region (sub-region) for each adjustable parameter of a multi-parameter primary graphical input device. By slightly complicating the entry format, however, it would also be possible to use a single activation region and call-out to enter either or both (or all) parameters. One way to accomplish this would be to allow the user to enter multiple values separated by some predetermined separator such as a dash, semi-colon, colon, etc. Single entries could be assigned to the corresponding parameter as before, that is, as a function of the current location (activation region) of the cursor. Multiple entries, however, would be interpreted as a requested change of each parameter entered. For example, if the user enters “E–W” into the call-out 1230, then the system adjusts both the lower and upper bounds of the parameter accordingly.
One other way to enable multiple entries would be for the call-out to be displayed initially with the current range(s) or value(s) of the input device. The user may then select and change any or all of the displayed parameters at once. After confirming the entry, the system can then adjust all parameters (or just all changed parameters) accordingly. For example, in
Multiple-parameter entry (for example, into a displayed call-out) according to the invention may also be used not only to adjust the input range(s) of a given (such as the button 1426), but also to change the nature and number of the adjustment features themselves.
Conversely, if the user enters a single range, perhaps with a null value for an other multiple ranges, the user could indicate to the system that it should join currently separate ranges. For example, given the slider as shown in
Using conventional graphical input devices, these range sub-division and joining operations cannot usually be accomplished at all, or else they require several mouse clicks, dragging operations, and/or keyboard entries. Using this embodiment of the invention, the desired subdivision (or joining) of the query range(s) can be accomplished with very few keyboard entries, and actually less (and less precise) cursor motion than is required in the prior art simply to adjust a single value using a slider.
Using the invention, an activation region may be designated for each azimuth line, for example, anywhere near the desired line. The line itself, or some indicator (such as the tag box showing the current angle 105) could then be caused to blink, or be displayed in a different color, etc., to indicate that the cursor is within the activation zone for that line. (Similar graphical techniques could of course be used in the examples of other input devices above.) As before, the system then generates a secondary graphical input device (here, again, a call-out) adjacent to the selected azimuth line. The user can then enter a new value; the azimuth line (and the corresponding parameter) is then adjusted accordingly. In
As is mentioned above, an input parameter in the sense of this invention means any input caused by user action that conforms to the predetermined input format of the underlying software routine. The input parameter(s) that may be entered using the invention are not limited to those directly associated with a particular graphical input device. Rather the invention may be used to input parameters according to predetermined heuristic rules.
As just one of many possibilities, assume that the range slider 1420 (
As another example, assume the user places the cursor over the range slider 1420 and types “blue”. The underlying routine could then interpret this entry not as an adjustment of the parameter P, but rather as an instruction to use the color blue to display its visualization of whatever parameter the slider 1420 controls.
As still another example, assume the user of a web browser positions the cursor over a standard “Back” icon. In conventional browsers, the only acceptable primary input is the click of a mouse button (or equivalent). Using this heuristic embodiment of the invention, however, the user might instead enter via the keyboard a text entry such as “Spotfire”. The browser could then interpret this as an instruction to search backward through the user's browsing history to find the first web site that contains the word “Spotfire”, for example, www.spotfire.com. Entering a number n could instead be interpreted as an instruction to go to the n'th earlier web page viewed.
As yet another example, assume that the user is working with a statistical analysis program and that this program has an on-screen toolbar icon used to select various statistical algorithms by means of some primary input parameter. Using the invention, the user could, for example, position the cursor over the icon and enter some secondary input parameter such as “4 K-mean”, which the underlying program could interpret as an instruction to select for execution from among different available algorithms execute an analysis algorithm that performs “K-means clustering” with an argument of “4”. Note that this is also of an example of a secondary input entry that has more than one “part,” that is, that allows for entry of more than one heuristic parameter. If desired or necessary to make it easier or possible for the underlying application to parse distinguish which type of the user is attempting, prefixes such as “#” or “$” or other type (or characteristic) identifiers may also be used to indicate particular input types.
Indeed, it is also possible according to the invention to use a single primary input device for entry of different types of secondary input parameters, or even third- or fourth-order, etc. parameters. For example, combining two examples above, assume that the statistical analysis program is also the program used to generate the histogram. Assume further that the range slider's primary input parameter is a range of numerical values set by dragging the edges of the button 1426. The primary input action is therefore dragging of the button, or its edges, using a mouse (or equivalent). Assume the scale of the range slider is from 0 to 100 (as in
The standard action to accomplish this would be to drag the left edge of the button to be aligned with the “50” scale entry and the right edge to “80”. As is mentioned above, according to the invention, the user could instead place the cursor on the slider and type “50;80”. This is an example of a secondary input that is of the same type (here, numeric), that is, has the same characteristic, and is used to input the same parameter(s) as the primary input device itself. Assuming the underlying GUI is so designed and that the analysis program has such parameters, however, then according to this embodiment of the invention, the user might instead type “blue,” or “4 K-mean,” which the GUI then parses (using any conventional methods) and passes to the analysis routine as instructions to change the corresponding display portion to blue, or the analysis to 4-K mean clustering.
Expressed more generally, assume an underlying routine that generates and interprets a primary user action as inputting one or more value(s) Vi for primary input parameters when a graphical input device is selected. According to the invention, at least one secondary user action (which generates secondary input parameter(s)) is interpreted either as inputting the value(s) Vi, or as inputting value(s) corresponding to some other aspect or feature of the underlying routine, which may, but need not, be of the same data type or have the same distinguishing characteristic(s) as the value(s). All that is required to implement the invention in these cases is any conventionally designed parsing or type-identification routine to distinguish whether the entered value is a primary or secondary input parameter, and that the user be made aware of the predetermined semantics for and meanings of allowable secondary user actions (secondary input parameters).
In all of these “heuristic” embodiments of the invention, the graphical input device is associated with some underlying executing application. This application has one or more user-controllable, that is, user-selectable, features, such as not only the range of input parameters, but also the type of analysis to be performed, the method of display or other presentation to be used, etc. The application then, using conventional GUI technology, causes at least one graphical input device to be displayed for the user. One or more primary input parameters having first predetermined data types or structures are associated with this graphical input device and are used as inputs to set or adjust a first feature of the application.
According to the invention, however, the user is also allowed to enter at least one secondary input value by means of secondary user actions. This (these) secondary value(s) may be of the same first predetermined data type or structure, in which case they are used to control or adjust the same first feature of the application. On the other hand, in this heuristic embodiment of the invention, the secondary input parameters may also be of a second predetermined data type or structure. When the application senses this, then it applies the input values to control or adjust some other feature of the application. For example, entering a numerical value might be interpreted as the value for a range slider used to set the value of an input parameter to a current analysis algorithm (a first feature), whereas entering “4 K-mean” might be interpreted as selecting which algorithm (a different, second feature) is to be applied.
As long as the underlying GUI for a given program is designed to determine when a position indicator such as a cursor lies within some delimited region of a display screen, the invention may also be used to “convert” an on-screen object not normally used for input into one that is. In these cases, the primary input parameter is a “null” value, or it may be one or more mouse clicks and/or mouse movements used to activate the object to allow for resizing, repositioning by dragging, or a selection from a pull-down menu of such features as deletion, borders, etc. For example, assume that the user is working with a drawing program such as a CAD application, or even with a mixed text/graphics application such as Microsoft PowerPoint. Assume further that the user positions the cursor over, for example, a display of a red circle. By typing “blue” or “new” for example, without preceding it with a mouse click, the underlying program could change the color of the circle, or create a copy of it. In cases such as these, the secondary input actions are used to control the on-screen display of the “input” device itself.
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|U.S. Classification||1/1, 706/61, 707/999.003, 707/999.007|
|International Classification||G06F17/30, G06F15/18|
|Cooperative Classification||Y10S707/99933, Y10S707/99937, G06F17/30398, G06F17/30554|
|European Classification||G06F17/30S4F5, G06F17/30S4V|
|May 23, 2001||AS||Assignment|
Owner name: SPOTFIRE AB, SWEDEN
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Effective date: 20010521
|Feb 2, 2007||AS||Assignment|
Owner name: SPOTFIRE AB, SWEDEN
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:AHLBERG, CHRISTOPHER;TRUVE, STAFFAN;WISTRAND, ERIK;REEL/FRAME:018850/0010;SIGNING DATES FROM 20050915 TO 20050919
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